CVE-2026-8721CRITICAL 9.8EPSS p35.5%

CVE-2026-8721CVE-2026-8721

Description

Crypt::OpenSSL::PKCS12 versions through 1.94 for Perl truncates passwords with embedded NULLs. Password parameters in PKCS12.xs are declared char *, which routes through Perl's default typemap to SvPV_nolen. The Perl length is discarded. The C code (or OpenSSL internally) calls strlen() on the buffer. Any password byte at or after the first NULL is silently dropped. Binary / KDF-derived / HMAC-derived passwords lose entropy without any warnings.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.45% probability of exploitation · percentile 35.5% · 2026-06-19T12:03:05Z
Published2026-05-17
Last modified2026-05-18

Underlying weaknesses· 1

CWE-170

References

  1. https://metacpan.org/release/JONASBN/Crypt-OpenSSL-PKCS12-1.95/view/Changes.md
  2. http://www.openwall.com/lists/oss-security/2026/05/17/6

1

TypeTargetConfidenceTier
WeaknessImproper Null Terminationcwe-1700%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.